Chromosome Banding Properties of Neogobius fluviatilis (Pallas, 1814) (Perciformes, Gobiidae)

The monkey goby, Neogobius fluviatilis (Pallas, 1814) that distributed in Türkiye was studied cytogenetically for the first time. In this context, diploid chromosome number, chromosome morphology and also chromosomal banding properties (C-banding and Ag-NOR staining) of N. fluviatilis were revealed out. Chromosome slides were prepared from head kidney cells according to the air-drying technique. Chromosome slides were observed under the microscope and metaphases were photographed. The chromosomes were measured by digital caliper and karyotype was arranged manually. The diploid chromosome number was found as 46. Karyotype was composed with all uniarmed chromosomes. Fundamental arm number was calculated as 46 too. No heteromorphic sex chromosomes were determined in the karyotype. C-bands were detected on the pericentromeres of almost all chromosomes. Otherwise, two Ag-NORs were found in the silver-stained metaphases. This study revealed out chromosomal properties of N. fluviatilis from Türkiye with conventional cytogenetic techniques. This report may improve the cytogenetic data of the genus Neogobius.